Using postharvest “Red global” grapes as the material, we investigated the effect of four different treatments of control，250 μL/L ozone, 0.3% coatings and the combination of 250 μL/L ozone and 0.3% coatings on the storage property of grapes, Through the determination of the soluble solids,titratable acid,respiration intensity, hardness, peroxidase(POD), superoxide dismutase (SOD), βl，3glucanase (GLU), chitinase(CHI), malondialdehyde(MDA), total phenol, statistical weight loss and decay. The results showed that the weight loss rate and rot rate of 250 μL/L ozone, 0.3% coatings and the combination of 250 μL/L ozone and 0.3% coatings was reduced, the activities of POD,SOD, CHI,GLU was promoted, MDA content was decreased and the drop of the total phenol was delayed compared with control group. In conclusion, the combination of 250 μL/L ozone and 0.3% sodium alginate coatings had the best result.